Battery Statistics
HeadWay 40152 - 3.2 volt 15 AH
LiFeYPO4
$25 USD
Voltage range: 2.0V - 4.0V
Current (max): 150A
Power (max): 480 W
Weight: 1.06 lbs
Size (inches): L-1.57 W-1.57 H-5.98
Volume: 14 cu-in
Total energy: 48.00 watt-hours

Links...
HeadWay
40152 spec sheet
Cost: 1.92 Wh/$ ($ 0.52/Wh)
Weight: 45.36 watt-hours per lb.
Volume: 3.23 watt-hours per cu-in
Cycle life...
2000 cycles @ 80% DOD - 76.80 kWh
1500 cycles @ 100% DOD - 72.00 kWh
Life cost: $ 0.33/kWh
453 watts (max)/lbs.

Charging Information...
Voltage (max): 3.6 V
Current (max): 45 A
Power (max): 164 watts
Build a pack with this battery...

Series batteries: Parallel batteries:
Cost: $
Watt-hours per mile:
Optional pack title:
Metric

http://www.zuglet.com/batteries/batteryPack.php?id=1040&cost=25&whpm=400